<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			body{
				background-color: #A52A2A;
				height: 2000px;
				margin: 0px;
			}
			
			#advister{
				position: fixed;
				height: 300px;
				width: 200px;
				background-color: green;
				top: 100px;
				left: 50px;
			}
		</style>
	</head>
	<body>
		<div id="advister">
			我是广告
		</div>
		<img src="img/img1.jpg" />
	</body>
</html>
